Research Article

Mechanical Properties of Epoxy and Its Carbon Fiber Composites Modified by Nanoparticles

Table 1

Compressive properties of bulk matrix resins cured by piperidine.

Filler typeWeight fractionCompressive yield strength  
(MPa)
Compressive modulus 
(GPa)
Tensile strength 
(MPa) [25]
Tensile modulus  
(GPa) [25]

Neat epoxy89.1 ± 1.22.62 ± 0.0565.8 ± 1.92.94 ± 0.10

Silica2 wt.%91.6 ± 0.42.63 ± 0.02
4 wt.%91.5 ± 0.22.55 ± 0.03
6 wt.%91.9 ± 0.52.46 ± 0.05
8 wt.%92.3 ± 0.32.58 ± 0.03
10 wt.%91.1 ± 0.22.71 ± 0.0269.0 ± 0.53.36 ± 0.12
20 wt.%94.8 ± 0.52.89 ± 0.07

Halloysite2 wt.%90.8 ± 0.22.43 ± 0.05
5 wt.%89.3 ± 0.32.40 ± 0.0168.1 ± 0.33.03 ± 0.13
7 wt.%90.9 ± 0.22.55 ± 0.03
10 wt.%90.4 ± 0.12.49 ± 0.0168.2 ± 0.43.11 ± 0.08
15 wt.%91.3 ± 0.22.58 ± 0.02

CTBN liquid rubber5 wt.%92.4 ± 0.62.61 ± 0.0367.3 ± 0.72.09 ± 0.10
10 wt.%89.3 ± 0.52.42 ± 0.0660.1 ± 1.02.61 ± 0.10

Hybrid system10 wt.% halloysite + 5 wt.% CTBN93.0 ± 0.32.72 ± 0.0365.9 ± 0.33.05 ± 0.11
10 wt.% silica + 5 wt.% CTBN96.2 ± 0.92.77 ± 0.0565.5 ± 0.43.17 ± 0.10
10 wt.% silica + 10 wt.% CTBN90.1 ± 0.32.69 ± 0.0459.2 ± 0.72.83 ± 0.09